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:: ENHANCES RE/\/tOVAL OF
SUSPENDED SEDl/\/tENT
:: SUPPRESSES SCOUR AND
RETAINS CAPTURED SEDl/\/tENT
:: CAPTURES AND RET Al NS
FLOATABLE POLLUTANTS LIKE
TRASH & HYDROCARBONS
:: RETROFliT ABLE INTO
EXISTIN� SU/\/lP
/\/lANHOLES
:: EASY TO SHIP, INSTALL
& /\/lAI NT Al N
USE THE THE PRESERVER™
TO:
• Use as an equivalent to:
Gravity Separation Devices
Hydrodynamic separators
Vortex separators/concentrators
• Quantify your annual sediment removal to meet
permit requirements.
• Sediment removal and retention backed by full scale,
independent 3rd party laboratory testing.
Collect sediment within sump manholes, not downstream
BMPs:
• For example: over the long-term, pond dredging
costs are 2x to 4x that of vacuuming sediment from
manholes that discharge to the pond.
• Greatly decrease your downstream BMP
maintenance frequency.OWMAN CONSTRUCTION SUl'l'LY, INC
�!'I!!�lr!':!!r'; -SIMPLE • EFFECTIVE • AFFORDABLE • STORMWATER SOLUTIONS
THE PROBLEM:
• Previously captured sediment in sump manholes is subject to scour during large storms. Sediment is washed downstream
and the sump's intended function is diminished.
• Skimmers are effective at capturing floatable pollutants such as trash and hydrocarbons, but have the negative effect of
increasing scour.
• Current devices on the market utilize swirling which exacerbates scour at high flows, or use false floors or skirts to protect
previously captured sediment that reduce ease of access/maintenance.
HIGH ENERGY FLOW JET
CIRCULAR FLOW PATTERN OBSERVED DUE TO HIGH
VORTEX FLOW PATTERNS OBSERVED DUE TO INFLUENCE OF FLOATABLES SKIMMER
FLOATABLES SKIMMER
ENERGY FLOW JET SHEAR ----+.4-.L VORTEX FLOW PATTERNS OBSERVED DUE TO INFLUENCE OF FLOATABLES SKIMMER
PREVIOUSLY SETTLED SOLIDS OBSERVED TO
SCOUR FROM DOWNSTREAM TO UPSTREAM, RELATIVE
TO THE INLET
The Preserver's energy dissipator eliminates the flow patterns that cause scour in sump manholes and sump manholes with
skimmers. The quiescent condition created by the dissipator allows for greater sediment removal during low flows and
nearly eliminates scour during high flows.
Several publicly funded studies have been performed in recent years to quantify the removal and retention performance of
several common gravity separation manholes. When using that data in a continuous simulation to mimic natural rainfall
patterns, the results show that units designed to suppress scour perform much better on an average annual basis versus all
other units tested.
�OmEnTUm™ SEE HOW /TWO�@MomentumEnv.com E N VI RO N NI E NT AL
877 773 0073 SIMPLE • EFFECTIVE • AFFORDABLE • STORMWATER SOL�TIONS • •
Distributed by: ASP
Enterprises: Phone:
800-869-9600,
www.aspent.com
Distributed by: Quick Supply Co., 6620 NW Toni Drive Des Moines, IA 50313, Phone: (515)289-1271, www.quicksupplydm.com